package com.itheima.可变参数.不可变集合;

import java.util.List;
import java.util.Map;

public class Demo1 {
    public static void main(String[] args) {
        method1();
        method2();
        method3();
        method4();

    }

    private static void method4() {

    }

    private static void method3() {
    }

    private static void method2() {
    }

    private static void method1() {

    }
}
